How i can create an event and enable the sing ups and form squads with the people who assist the event

is cause i have seen in many sites (i play perfect world online) that whne is going to be a territory war theres an option to make squads and all that stuff so if you can explain will be amazing thx :D!!

If you go to the Calendar section of your site,then click "Add Event", then tick the "enable signups" checkbox that then allows signups and you can then organize participants into groups, roles, etc. =)